/*
 *    Copyright 2009-2024 the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       https://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.apache.ibatis.submitted.deferload_common_property;

import static org.junit.jupiter.api.Assertions.assertNotNull;

import java.io.Reader;
import java.util.ArrayList;
import java.util.List;

import org.apache.ibatis.BaseDataTest;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.ResultContext;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

class CommonPropertyDeferLoadTest {

  private static SqlSessionFactory sqlSessionFactory;
  private static SqlSessionFactory lazyLoadSqlSessionFactory;

  @BeforeAll
  static void initDatabase() throws Exception {
    try (Reader reader = Resources
        .getResourceAsReader("org/apache/ibatis/submitted/deferload_common_property/ibatisConfig.xml")) {
      sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
    }
    try (Reader reader = Resources
        .getResourceAsReader("org/apache/ibatis/submitted/deferload_common_property/lazyLoadIbatisConfig.xml")) {
      lazyLoadSqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
    }

    BaseDataTest.runScript(sqlSessionFactory.getConfiguration().getEnvironment().getDataSource(),
        "org/apache/ibatis/submitted/deferload_common_property/CreateDB.sql");
  }

  @Test
  void deferLoadAfterResultHandler() {
    try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
      class MyResultHandler implements ResultHandler {
        private final List<Child> children = new ArrayList<>();

        @Override
        public void handleResult(ResultContext context) {
          Child child = (Child) context.getResultObject();
          children.add(child);
        }
      }
      MyResultHandler myResultHandler = new MyResultHandler();
      sqlSession.select("org.apache.ibatis.submitted.deferload_common_property.ChildMapper.selectAll", myResultHandler);
      for (Child child : myResultHandler.children) {
        assertNotNull(child.getFather());
      }
    }
  }

  @Test
  void deferLoadDuringResultHandler() {
    try (SqlSession sqlSession = sqlSessionFactory.openSession()) {
      class MyResultHandler implements ResultHandler {
        @Override
        public void handleResult(ResultContext context) {
          Child child = (Child) context.getResultObject();
          assertNotNull(child.getFather());
        }
      }
      sqlSession.select("org.apache.ibatis.submitted.deferload_common_property.ChildMapper.selectAll",
          new MyResultHandler());
    }
  }

  @Test
  void deferLoadAfterResultHandlerWithLazyLoad() {
    try (SqlSession sqlSession = lazyLoadSqlSessionFactory.openSession()) {
      class MyResultHandler implements ResultHandler {
        private final List<Child> children = new ArrayList<>();

        @Override
        public void handleResult(ResultContext context) {
          Child child = (Child) context.getResultObject();
          children.add(child);
        }
      }
      MyResultHandler myResultHandler = new MyResultHandler();
      sqlSession.select("org.apache.ibatis.submitted.deferload_common_property.ChildMapper.selectAll", myResultHandler);
      for (Child child : myResultHandler.children) {
        assertNotNull(child.getFather());
      }
    }
  }

  @Test
  void deferLoadDuringResultHandlerWithLazyLoad() {
    try (SqlSession sqlSession = lazyLoadSqlSessionFactory.openSession()) {
      class MyResultHandler implements ResultHandler {
        @Override
        public void handleResult(ResultContext context) {
          Child child = (Child) context.getResultObject();
          assertNotNull(child.getFather());
        }
      }
      sqlSession.select("org.apache.ibatis.submitted.deferload_common_property.ChildMapper.selectAll",
          new MyResultHandler());
    }
  }
}
